Question

which table below does not represent a function?

Explanation:

Define a function

Using the Definition of a Function knowledge point
A relation is a function if and only if each input \(x\) maps to exactly one output \(y\). If a single input \(x\) is paired with more than one distinct output \(y\), the relation is not a function.

Analyze the first table

Using the Definition of a Function knowledge point

$$
LATEXBLOCK0
$$

Analyze the second table

Using the Definition of a Function knowledge point

$$
LATEXBLOCK1
$$

Analyze the third table

Using the Definition of a Function knowledge point

$$
LATEXBLOCK2
$$

Answer:

• (A) Table 1:

x	y
-2	-1
0	0

• (B) Table 2:

x	y
9	6
-4	5
-2	2

• **(C) Table 3:

x	y
7	5
-4	4
-1	6	(Correct answer)**